The Children's Hospital of Philadelphia Division of Gastroenterology and Nutrition 324 South 34th Street
- Clinical Assistant Professor of Pediatrics at University of Pennsylvania School of Medicine (1989 – 1990)
- Assistant Professor of Pediatrics at the Children's Hospital of Philadelphia (1993 – 2002)
- Associate Professor of Pediatrics at the Children's Hospital of Philadelphia (2002– present)
- M.B.B.S, St. John's Medical College, India (1982)
- P.U.C., Mount Carmel College, Bangalore, India (1976)
- Kamath BM, Bhargava S, Markowitz JE, Ruchelli E, Scanlin TF, Mascarenhas MR. A Girl with Cystic Fibrosis and Failure to Thrive. J Pediatr. Vol 143(1) . 2003 July:115-9.
- Dunn RL, Stettlar N, Mascarenhas MR. Refeeding Syndrome in Hospitalized Pediatric Patients. Nutr in Clin Prac. Vol 18(4) . 2003 August:327-332.
- Mascarenhas MR. Nutrition Section. Philadelphia Manual of Inpatient Pediatrics. 2003.
- Spergel JM, Beausoleil JL, Mascarenhas MR, Liacouras CA. The use of prick skin tests and patch tests to identify causative foods in eosinophillic esophagitis. J Allergy & Clin Immunol. Vol 109(2) . 2002 February:363-368.
- Batres LA, Liacouras CA, Schnaufer L, Mascarenhas MR. Eosinophilic esophagitis associated with anastomotic strictures after esophageal atresia repair. J Pediatr Gastro Nutr.. Vol 35(2) . 2002:224-226.
- Brown KA, Back SJ, Ruchelli ED, Markowitz J, Mascarenhas MR, Verma R, Piccoli DA, Baldassano RN. Lamina propria and circulating interleukin-6 in newly diagnosed pediatric inflammatory bowel disease patients. Amer J Gastro. Vol 97(10) . 2002 October:2603-2608.
- Gillis LA, McDonald-McGinn DM, Hedrick H, Pasquariello PS, Mahboubi S, Zackai EH, Mascarenhas MR. Intestinal malrotation and other gastrointestinal anomalies in the 22q11.2 deletion syndrome.. 15th Annual meeting of NASPGHAN, San Antonio, TX. 2002 October.
- Mascarenhas MR, Zemel BS, Tomezsko JL, Schall JI, Stettler N, Scanlin TF, Stallings VA. Effect of Sexual Maturation on Resting Energy Expenditure (REE), Growth and Body Composition in Adolescent Girls with CF Compared to Healthy Controls. 16th Annual meeting of the North American Cystic Fibrosis Conference, New Orleans, LA. 2002 October.
- Mascarenhas MR. Vitamin deficiencies and excesses. Gellis and Kagan's Current Pediatric Therapy (17th Edition). W.B. Saunders Company Inc.; 2002:16-20.
- Sentongo T, Mascarenhas MR. Newer components of enteral formulas. Pediatric Clinic of North America. W.B. Saunders Inc; 2002:113-126.